A wave of developers soured on the complexity of AngularJS, and especially so with the AngularJS ( Angular 1 ) -> Angular ( Angular 2 ) migration, which was effectively a new framework and burned developer goodwill.
Recently I've noticed people saying good things about Angular again and that it "just works" / batteries-included, unlike the React ecosystem since React is "only a library" rather than a framework.
Since Angular 2, what have your experiences been with Angular working from year N to N+2? How often were you forced to do migrations, or are you still on an old version? What are the risks of not upgrading?